148 THE ACUTE SELF-LIMITED INFECTIONS 



to end. It is stained easily. It does not produce the 

 disease in animals. Sputum should be received in 5 

 per cent, carbolic acid, and cloths used to wipe the 

 mouth should be soaked in the same solution. 



No antiserum of any value has been devised, but 

 some observers report encouragingly upon vaccine 

 treatment. 



